金属位-酸中心协同性对烷烃异构化双功能催化剂的性能影响及研究进展  

The synergic effect of metal-acid proximity on the performance of bifunctional catalyst with alkanes isomerization and the research development

作　　者：于瑞 华子乐[2] 黄健[2] Yu Rui;Hua Zile;Huang Jian(School of Materials and Chemistry,University of Shanghai for Science and Technology,Shanghai 200082,China;State Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China)

机构地区：[1]上海理工大学材料与化学学院,上海200082 [2]中国科学院上海硅酸盐研究所高性能陶瓷和超微结构国家重点实验室,上海200050

出　　处：《化工矿物与加工》2022年第5期1-6,共6页Industrial Minerals & Processing

摘　　要：由酸性分子筛负载金属元素制备的双功能催化剂具有良好的烷烃异构化催化性能,被广泛应用于烷烃加氢异构化领域。除金属活性、Br?nsted酸密度与强度、分子筛孔道结构等基本性质外,双功能催化剂中金属位与酸中心的协同性也是影响烷烃异构化催化性能的关键因素。综述了双功能催化剂设计开发的最新进展,介绍了正构烷烃加氢异构化的反应机理和理想的催化转化过程,系统论述了催化剂金属位-酸中心双位点协同性对催化性能的影响,总结了金属位-酸中心高度协同的双功能催化剂的设计与制备现状,并对其发展前景进行了展望。The bifunctional catalyst prepared by the acidic molecular sieve supported with metal element exhibits excellent catalytic performance and is widely used for alkanes hydroisomerization.In addition to its basic properties such as metal activity,density and strength of Br?nsted acid and pore structure of molecular sieves,the synergy of metal-acid proximity of bifunctional catalyst is a critical factor on the isomerization catalytic performance.In this paper the latest development and design of bifunctional catalysts were summarized.The reaction mechanism and desired catalytic conversion process of n-alkanes hydroisomerization were introduced,and the synergic effect of metal-acid proximity of catalyst on catalytic performance was systematically discussed.At last,the outlook on development of design and preparation of bifunctional catalysts with high metal-acid synergy was presented.

关 键 词：加氢异构化反应 双功能催化剂 金属位-酸中心协同性 金属-酸浓度比值 金属-酸距离邻近性 

分 类 号：TE666[石油与天然气工程—油气加工工程]